Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Daniel Callaghan

Dermatology • Denver, CO

Active NPI 1629496872 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

3540 S Poplar St Ste 300
Denver, CO 802371364

Call 3038509715 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

3540 S Poplar St Ste 300

Denver, CO 802371364

Telephone 3038509715
Organization at the Same NPPES Address or Phone
Sorkin Dermatology Associates Professional Llc. Facility NPI 1578584652

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

NPPES lists 2 distinct additional practice-address records in Beaver, PA; Boston, MA. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

CMS Doctors and Clinicians lists 1 group name: Advanced Dermatology Of Colorado Pc. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

Georgetown University School Of Medicine

Graduation Year

2014

Medicare patients

626 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.

Medicare-allowed amount

About $1,469,971 in 2024

The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

Paid by Medicare

About $1,163,301 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

30-day fills

506 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$3,935 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.

Open Payments general payments, program year 2025

All general payments: $691.28 across 30 records.

By nature of payment

  • Food and Beverage: $675.32 across 29 records.
  • Education: $15.96 across 1 record.

Reporting-company totals (3 largest of 10)

  • Novartis Pharmaceuticals Corporation: $153.88 across 7 records.
  • Regeneron Pharmaceuticals, Inc.: $117.58 across 4 records.
  • ABBVIE INC.: $109.58 across 5 records.

A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

12 years (graduated 2014)

CMS Doctors and Clinicians data list 2014 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2014

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Daniel Callaghan has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Daniel Callaghan as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Denver and Colorado

Billing and prescribing volume is not a quality rating.

Medicare Part B services

Close to the middle for clinicians listed under Dermatology in Denver, CO (2024, 27 clinicians with data). Median for this group: 2,350. Middle half: 819 to 3,349.

Close to the middle for clinicians listed under Dermatology in Colorado (2024, 203 clinicians with data). Median for this group: 2,596. Middle half: 1,190 to 4,389.

Medicare-allowed amount

A higher Medicare-allowed amount than 95% of clinicians listed under Dermatology in Denver, CO (2024, 27 clinicians with data). Median for this group: $140,501. Middle half: $36,000 to $202,991.

A higher Medicare-allowed amount than 95% of clinicians listed under Dermatology in Colorado (2024, 203 clinicians with data). Median for this group: $170,010. Middle half: $83,771 to $277,777.

Paid by Medicare

A higher Medicare payment amount than 95% of clinicians listed under Dermatology in Denver, CO (2024, 27 clinicians with data). Median for this group: $89,492. Middle half: $25,976 to $139,402.

A higher Medicare payment amount than 95% of clinicians listed under Dermatology in Colorado (2024, 203 clinicians with data). Median for this group: $119,488. Middle half: $56,832 to $196,202.

Medicare Part D prescriptions

More Part D prescriptions than 75% of clinicians listed under Dermatology in Denver, CO (2024, 34 clinicians with data). Median for this group: 389. Middle half: 133 to 497.

More Part D prescriptions than 60% of clinicians listed under Dermatology in Colorado (2024, 234 clinicians with data). Median for this group: 383. Middle half: 189 to 635.

Part D drug cost

A lower Part D drug cost than 75% of clinicians listed under Dermatology in Denver, CO (2024, 34 clinicians with data). Median for this group: $58,871. Middle half: $4,314 to $128,141.

A lower Part D drug cost than 75% of clinicians listed under Dermatology in Colorado (2024, 234 clinicians with data). Median for this group: $57,705. Middle half: $5,261 to $160,639.

44 active clinicians are listed under Dermatology with a practice address in Denver, CO (305 in Colorado).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Denver

0% of these 44 clinicians have the CMS telehealth indicator.

65.9% of these 44 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): 30 records totaling $691.28.

Manufacturer Payment Nature Product Type Amount ($)
Sanofi and Genzyme US Companies
Food and Beverage
In-kind items and services
DUPIXENT General $41.66
Regeneron Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
DUPIXENT General $37.89
Sanofi and Genzyme US Companies
Food and Beverage
In-kind items and services
DUPIXENT General $33.51
UCB, Inc.
Food and Beverage
In-kind items and services
Bimzelx General $32.71
Sanofi and Genzyme US Companies
Food and Beverage
In-kind items and services
DUPIXENT General $32.43
Regeneron Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
LIBTAYO General $32.33
Regeneron Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
DUPIXENT General $31.40
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
Rhapsido General $31.17
ABBVIE INC.
Food and Beverage
In-kind items and services
SKYRIZI General $25.57
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
COSENTYX General $24.88
ABBVIE INC.
Food and Beverage
In-kind items and services
RINVOQ General $23.59
ABBVIE INC.
Food and Beverage
In-kind items and services
RINVOQ General $23.32
ABBVIE INC.
Food and Beverage
In-kind items and services
SKYRIZI General $22.45
Janssen Pharmaceuticals, Inc
Food and Beverage
In-kind items and services
TREMFYA General $22.35
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
COSENTYX General $22.24
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
COSENTYX General $22.04
Organon LLC
Food and Beverage
In-kind items and services
VTAMA General $21.98
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
COSENTYX General $20.50
Janssen Pharmaceuticals, Inc
Food and Beverage
In-kind items and services
TREMFYA General $20.31
Janssen Pharmaceuticals, Inc
Food and Beverage
In-kind items and services
TREMFYA General $18.46
Janssen Pharmaceuticals, Inc
Food and Beverage
In-kind items and services
TREMFYA General $18.46
ConvaTec Inc.
Food and Beverage
In-kind items and services
INNOVAMATRIX AC General $18.25
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
COSENTYX General $17.58
Amgen Inc.
Food and Beverage
In-kind items and services
OTEZLA General $17.18
Janssen Pharmaceuticals, Inc
Food and Beverage
In-kind items and services
TREMFYA General $16.49

(top 25 shown)

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B · Data Year 2024
Reporting Year:

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2018–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2019–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
17311 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks
621 504 $2437.00 $623.45
17312 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks
360 255 $1494.00 $418.82
Q4299 Amnicore pro+, per square centimeter
202 16 $2785.79 $2375.24
13132 Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm
186 165 $1719.00 $246.16
Q4248 Dermacyte amniotic membrane allograft, per square centimeter
168 14 $2960.10 $1066.53
17003 Destruction of precancer skin growth, 2-14 growths
117 25 $25.00 $6.85
13131 Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 1.1-2.5 cm
108 104 $1420.00 $199.08
13121 Complicated repair of wound of scalp, arms, or legs, 2.6-7.5 cm
100 96 $1558.00 $246.92
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
93 92 $318.00 $92.01
17313 Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks
89 73 $2294.00 $624.82
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
78 58 $201.00 $57.45
17000 Destruction of precancer skin growth, 1 growth
54 52 $245.00 $41.70
14060 Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.0 sq cm or less
44 43 $2730.00 $771.90
17314 Removal and microscopic exam of growth of trunk, arms, or legs, each additional stage, 1-5 tissue blocks
40 25 $1432.00 $405.43
15275 Application of skin substitute graft to wound of face, scalp, eyelids, mouth, neck, ears, around eyes, genitals, hands, feet, fingers, or toes, 25.0 sq cm or less of wound 100.0 sq cm or less
37 19 $577.00 $117.75
11102 Biopsy of related skin growth, first growth
35 32 $380.00 $73.63
13151 Complicated repair of wound of eyelids, nose, ears, or lip, 1.1-2.5 cm
30 30 $1542.00 $221.94
13120 Complicated repair of wound of scalp, arms, or legs, 1.1-2.5 cm
28 27 $1307.00 $193.16
15260 Full thickness skin graft to nose, ears, eyelids, or lips, 20.0 sq cm or less
20 20 $3553.00 $1013.85
15271 Application of skin substitute graft to wound of trunk, arms, or legs, 25.0 sq cm or less of wound 100.0 sq cm or less
19 13 $566.00 $103.36
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm
16 14 $1113.00 $175.26
11602 Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm
15 14 $891.00 $119.51
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
14 14 $393.00 $111.95
13152 Complicated repair of wound of eyelids, nose, ears, or lip, 2.6-7.5 cm
12 12 $1805.00 $272.60
14040 Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.0 sq cm or less
11 11 $2711.00 $774.73

Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Cephalexin Cephalexin 249 1,879 $1,584.71 227
Mupirocin Mupirocin 141 2,786 $1,321.64 127
Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen 32 132 $217.40 32
Doxycycline Hyclate Doxycycline Hyclate 25 223 $234.85 24
Tramadol Hcl Tramadol Hcl 16 62 $39.83 15
Amoxicillin Amoxicillin 16 109 $33.93 14
Ciprofloxacin Hcl Ciprofloxacin Hcl 16 138 $91.39 14
Gentamicin Sulfate Gentamicin Sulfate 11 209 $411.30 —

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2025-01-07
Dermatology Primary Specialty

NUCC Taxonomy Code: 207N00000X

License # reported to NPPES MA 264816

A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.

Dermatology - MOHS-Micrographic Surgery

NUCC Taxonomy Code: 207ND0101X

License # reported to NPPES PA MD487930C

The highly-trained surgeons that perform Mohs Micrographic Surgery are specialists both in dermatology and pathology. With their extensive knowledge of the skin and unique pathological skills, they are able to remove only diseased tissue, preserving healthy tissue and minimizing the cosmetic impact of the surgery. Mohs surgeons who belong to the American College of Mohs Surgery (ACMS) have completed a minimum of one year of fellowship training at one of the ACMS-approved training centers in the U.S.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Colorado Division of Professions and Occupations.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - DERMATOLOGY

Medicare Enrollment ID

I20250109001529

Enrollment State Jurisdiction

PA

PECOS Control ID

1153621107

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Advanced Dermatology Of Colorado Pc

2500 Rocky Mountain Ave, Loveland, CO 805389004

Phone: 9704843050

Secondary Practice Locations

609 Albany St

Boston, MA 021182515

Phone: 6192607220

350 3rd St

Beaver, PA 150092261

Phone: 7247745255

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

2 listed
NPI 1679006597
NPI 1245625763

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

8 Historical Events
📍
Updated Practice Location January 07, 2025

Registered at 3540 S POPLAR ST STE 300, DENVER, CO 802371364 (Tel: 3038509715)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) January 07, 2025

Dermatology (license number reported to NPPES: PA MD487930C)

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NPI Profile Active October 14, 2015

NPI status registered as active in NPPES database

📍
Practice Location (Initial Record) October 14, 2015

Registered at 609 ALBANY ST, BOSTON, MA 021182515 (Tel: 6192607220)

📍
Business Mailing Address (Initial Record) October 14, 2015

Registered at 609 ALBANY ST, BOSTON, MA 021182515

👤
Provider Name / Credentials (Initial Record) October 14, 2015

Recorded as DANIEL CALLAGHAN

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) October 14, 2015

Dermatology (license number reported to NPPES: MA 264816)

🟢
Initial NPI Registration & Enumeration April 04, 2014

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1629496872
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: April 04, 2014
Last Update: January 07, 2025
Sole Proprietor: No

Other Dermatology Specialists in Denver

All Dermatology Specialists in Denver

Mailing Address

609 Albany St

Boston, MA 021182515

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.